lab_number.cpp

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#include "./lab_number.hpp"
 
using namespace std;
 
namespace scifir
{
    bool is_lab_number(const string& init_lab_number)
    {
        if ((init_lab_number.find("\u00B1") != string::npos or init_lab_number.find("+") != string::npos or init_lab_number.find("-") != string::npos) and init_lab_number.length() > 1)
        {
            vector<string> numbers;
            boost::split(numbers,init_lab_number,boost::is_any_of("+-,\u00B1"));
            if (numbers.size() != 3)
            {
                return false;
            }
            if (numbers[2].length() < 1)
            {
                return false;
            }
            bool dot_present = false;
            bool after_whitespace = false;
            bool after_alpha = false;
            boost::trim(numbers[0]);
            boost::trim(numbers[2]);
            for (unsigned int i = 0; i < numbers[0].length(); i++)
            {
                if (numbers[0][i] == '.')
                {
                    if (dot_present)
                    {
                        return false;
                    }
                    else
                    {
                        dot_present = true;
                        continue;
                    }
                }
                else if (numbers[0][i] == ' ')
                {
                    after_whitespace = true;
                    continue;
                }
                else if (!std::isdigit(numbers[0][i]) and after_whitespace == false)
                {
                    return false;
                }
                else if (after_whitespace == true)
                {
                    if (after_alpha == true and std::isalpha(numbers[0][i]))
                    {
                        return false;
                    }
                    else if (std::isalpha(numbers[0][i]))
                    {
                        continue;
                    }
                    else if (std::isdigit(numbers[0][i]))
                    {
                        after_alpha = true;
                    }
                }
            }
            dot_present = false;
            after_whitespace = false;
            after_alpha = false;
            for (unsigned int i = 0; i < numbers[2].length(); i++)
            {
                if (numbers[2][i] == '.')
                {
                    if (dot_present)
                    {
                        return false;
                    }
                    else
                    {
                        dot_present = true;
                        continue;
                    }
                }
                else if (numbers[2][i] == ' ')
                {
                    after_whitespace = true;
                    continue;
                }
                else if (!std::isdigit(numbers[2][i]) and after_whitespace == false)
                {
                    return false;
                }
                else if (after_whitespace == true)
                {
                    if (after_alpha == true and std::isalpha(numbers[2][i]))
                    {
                        return false;
                    }
                    else if (std::isalpha(numbers[2][i]))
                    {
                        continue;
                    }
                    else if (std::isdigit(numbers[2][i]))
                    {
                        after_alpha = true;
                    }
                }
            }
            return true;
        }
        else
        {
            return false;
        }
    }
}